Rolling brush and self-moving cleaning equipment

Abstract

The invention discloses a rolling brush and a self-moving cleaning device. The rolling brush comprises a barrel, a brush body and a driving device, at least one end of the cylinder body is provided with the check ring, and the check ring extends in the radial direction of the cylinder body; the cylinder body is provided with a first end and a second end, the blades are arranged on the cylinder body at intervals in the circumferential direction, the blades extend to the second end of the cylinder body from the first end of the cylinder body, the blades are attached to the check ring, and the check ring covers the ends, attached to the check ring, of the blades. According to the rolling brush and the self-moving cleaning equipment, hair can be effectively prevented from being wound on the rolling brush.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, and more specifically to a roller brush and a self-moving cleaning device. Background Art

[0002] Currently, the roller brushes of cleaning devices such as sweeping robots can generally be divided into two types based on their structure: those with integrated rubber bristles and those without. The cleaning components of the roller brush, such as blades, have sharp corners at their ends, which can snag hair, preventing it from quickly entering the dust bin. As the roller brush spins at high speeds, these snagged hairs can easily become entangled around the shaft at the end of the roller brush, requiring regular cleaning. In other words, all existing roller brushes suffer from the problem of hair entanglement.

[0003] Therefore, improvements are needed to at least partially solve the above problems. Summary of the Invention

[0004] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] The embodiments of the present application provide a roller brush and a self-moving cleaning device, which can effectively prevent hair from being entangled on the roller brush.

[0006] In a first aspect, an embodiment of the present application provides a roller brush, comprising:

[0007] Cylinder;

[0008] A retaining ring is provided at at least one end of the cylinder and extends radially along the cylinder;

[0009] The blades are provided in plurality and are spaced apart in the circumferential direction on the cylinder. The blades extend from the first end of the cylinder to the second end of the cylinder. The blades are fitted with the retaining ring, wherein the retaining ring covers the end of the blade fitted with the retaining ring.

[0010] Exemplarily, in the radial direction of the cylinder, the height of the first end of the blade and the height of the second end of the blade are both smaller than the height of the middle portion of the blade.

[0011] Exemplarily, the cylinder, the retaining ring and the blades are integrally formed.

[0012] Exemplarily, the shape of the blade is V-shaped, spiral or rectangular; and / or,

[0013] The blades are made of rubber.

[0014] Exemplarily, the retaining rings are provided at both ends of the cylinder.

[0015] In a first aspect, an embodiment of the present application provides a self-propelled cleaning device, comprising:

[0016] Equipment body;

[0017] A driving wheel assembly, used for driving the device body to move forward;

[0018] a housing connected to the device body;

[0019] a roller brush as described above;

[0020] A roller brush shaft, the roller brush shaft is connected to the housing, and the cylinder is sleeved on the roller brush shaft;

[0021] The roller brush driving assembly is in driving connection with the roller brush shaft and is used for driving the roller brush shaft to rotate, thereby driving the roller brush to rotate relative to the housing.

[0022] Exemplarily, a flexible contact piece is provided on the housing, and the flexible contact piece contacts the outer contour of the retaining ring.

[0023] Exemplarily, the housing includes a roller brush bin and a roller brush cover, the roller brush cover is detachably connected to the roller brush bin, a receiving cavity is formed between the roller brush bin and the roller brush cover, and the roller brush cover has a hollow portion communicating with the receiving cavity on a side facing the surface to be cleaned;

[0024] The roller brush is accommodated in the accommodating cavity and partially extends out of the accommodating cavity through the hollow portion;

[0025] The flexible contact piece is arranged on the roller brush cover and is located at the rear side of the roller brush cover.

[0026] Exemplarily, the first end of the roller brush shaft is transmission-connected to the roller brush drive assembly, and the second end of the roller brush shaft is rotationally engaged with the shell, wherein the retaining ring is provided at both ends of the cylinder.

[0027] Exemplarily, the roller brush shaft includes a first connecting section, a second connecting section and a third connecting section, the first connecting section is passed through the barrel, the second connecting section is detachably connected to the first end of the first connecting section and is transmission-connected to the roller brush drive assembly, and the third connecting section is detachably connected to the second end of the first connecting section and is rotatably connected to the shell.

[0028] Exemplarily, the first end of the roller brush shaft is transmission-connected to the roller brush drive assembly, and the second end of the roller brush shaft is a free end, wherein the retaining ring is arranged at the first end of the cylinder or at both ends of the cylinder, and the first end of the cylinder is adjacent to the first end of the roller brush shaft.

[0029] Exemplarily, one of the end of the roller brush shaft and the housing is provided with a plug-in slot, and the other is provided with a plug-in portion, the plug-in portion being inserted into the plug-in slot, wherein the end of the roller brush shaft includes at least one end that is transmission-connected to the roller brush drive assembly;

[0030] A plurality of tooth-shaped portions are arranged at intervals along the circumference of the roller brush shaft on the groove wall of the insertion groove and / or on the insertion portion.

[0031] Exemplarily, the housing includes a roller brush bin and a roller brush cover, the roller brush cover is detachably connected to the roller brush bin, a receiving cavity is formed between the roller brush bin and the roller brush cover, and the roller brush cover has a hollow portion communicating with the receiving cavity on a side facing the surface to be cleaned;

[0032] The roller brush is accommodated in the accommodating cavity and partially extends out of the accommodating cavity through the hollow portion;

[0033] The plug-in groove is provided on one of the end portion of the roller brush shaft and the roller brush cover, and the plug-in portion is provided on the other.

[0034] Exemplarily, the roller brush drive assembly includes a motor and a transmission structure;

[0035] The motor is connected to the roller brush shaft through the transmission structure, and the transmission structure is magnetically matched with the roller brush shaft.

[0036] According to the roller brush and self-moving cleaning device of the present invention, a retaining ring is provided at the end of the barrel of the roller brush, and the retaining ring is configured to cover the end of the blade that is in contact with the retaining ring, thereby eliminating the sharp corners at both ends of the blade and preventing hair from getting caught on the sharp corners, that is, effectively preventing hair from being entangled in the roller brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The following drawings of this application are hereby incorporated as part of this application for understanding this application. The drawings show the embodiments of this application and their descriptions, and are used to explain the device and principle of this application. In the drawings,

[0038] Figure 1 Schematic diagram of the structure of a roller brush according to an embodiment of the present application;

[0039] Figure 2 for Figure 1 A schematic cross-sectional view of the roller brush in FIG.

[0040] Figure 3 This is a partial structural diagram of a self-moving cleaning device according to an embodiment of the present application;

[0041] Figure 4 for Figure 3 A structural schematic diagram of the self-moving cleaning device from another angle;

[0042] Figure 5 for Figure 3 A schematic cross-sectional view of the self-moving cleaning device in the axial direction of the cylinder;

[0043] Figure 6 for Figure 5 A schematic cross-sectional view of the middle part;

[0044] Figure 7 for Figure 5 A schematic cross-sectional view at point B in the middle;

[0045] Figure 8 for Figure 5 Schematic diagram of the three-dimensional structure of the roller brush and the roller brush shaft;

[0046] Figure 9 for Figure 5 A schematic cross-sectional view of the roller brush and roller brush shaft;

[0047] Figure 10 for Figure 6 A schematic cross-sectional view of the roller brush cover;

[0048] Figure 11 for Figure 3 A schematic cross-sectional view of the self-moving cleaning device in the radial direction of the cylinder.

[0049] Description of reference numerals:

[0050] 100-roller brush, 110-cylinder, 120-first retaining ring, 130-second retaining ring, 140-cleaning part, 150-axis hole;

[0051] 200 - housing, 210 - roller brush cover, 211 - first flexible contact member, 212 - second flexible contact member, 213 - plug-in portion, 2131 - toothed portion, 214 - hollow portion, 215 - scraper bar, 220 - roller brush chamber, 221 - second step portion, 222 - garbage channel, 230 - second bearing;

[0052] 300 - roller brush shaft, 310 - first connecting section, 320 - second connecting section, 321 - plug-in slot, 322 - second magnetic element, 330 - third connecting section, 331 - first step, 340 - first connecting rod, 350 - second connecting rod, 360 - third connecting rod;

[0053] 400 - roller brush drive assembly, 410 - motor, 420 - belt drive structure, 430 - transmission shaft, 431 - first magnetic element, 440 - first bearing. DETAILED DESCRIPTION

[0054] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described in order to avoid confusion with the present application.

[0055] It should be understood that the present application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the present application to those skilled in the art. In the drawings, the dimensions and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals throughout represent like elements.

[0056] It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, without departing from the teachings of this application, the first element, component, region, layer, or part discussed below may be represented as a second element, component, region, layer, or part.

[0057] Spatially relative terms, such as "below," "beneath," "beneath," "above," "upper," etc., may be used herein for convenience to describe the relationship of one element or feature to other elements or features illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientations depicted in the figures.

[0058] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present application. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0059] Embodiments of the invention are described herein with reference to cross-sectional views that are schematic diagrams of ideal embodiments (and intermediate structures) of the present application. Thus, variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, the embodiments of the present application should not be limited to the specific shapes shown herein, but rather include shape deviations due to, for example, manufacturing. Therefore, what is shown in the figures is schematic in nature, and their shapes are not intended to show the actual shape of the device and are not intended to limit the scope of the present application.

[0060] Refer to the attached Figure 1 、 2 A roller brush 100 according to an embodiment of the present application is exemplarily described. The roller brush 100 is used in a cleaning device, such as a vacuum cleaner, a floor scrubber, a robot vacuum, or a sweeping and mopping robot. The roller brush 100 is configured to contact a surface to be cleaned during rotation to remove debris (e.g., dust, hair, etc.) from the surface. The roller brush 100 includes a barrel 110, a first retaining ring 120, a second retaining ring 130, and blades 140.

[0061] In the embodiment of the present application, the barrel 110 is cylindrical, that is, the outer contour of the cross section of the barrel 110 along its radial direction is circular. An axial hole 150 is provided in the middle of the barrel 110, and the axial hole 150 is used to install the roller brush shaft, and the roller brush shaft is used to drive the roller brush 100 to rotate synchronously with it. In the embodiment of the present application, the diameters of the two ends of the barrel 110 are slightly larger than the diameter of the middle part of the barrel 110. In some other embodiments, the diameters of the barrel 110 in its extension direction may be completely equal. In some other embodiments, the barrel 110 may be prismatic, that is, the outer contour of the cross section of the barrel 110 along its radial direction is polygonal. In some other embodiments, the axial hole 150 may not be provided in the middle of the barrel 110, but a first rotating shaft and a second rotating shaft extending to both sides are provided at both ends of the barrel 110, and the first rotating shaft and the second rotating shaft may be integrally formed with the barrel 110 or detachably connected.

[0062] In the embodiment of the present application, the first retaining ring 120 surrounds the first end of the cylinder 110 and extends radially along the cylinder 110. The first retaining ring 120 is annular, and its inner edge is connected to the outer edge of the first end of the cylinder 110. The first retaining ring 120 extends radially along the cylinder 110, that is, the first retaining ring 120 is perpendicular or approximately perpendicular to the central axis of the cylinder 110. In the embodiment of the present application, the cylinder 110 and the first retaining ring 120 are both made of rubber, and the first retaining ring 120 and the cylinder 110 are integrally formed, for example, by integral injection molding. In other embodiments, the first retaining ring 120 can be a separate part, connected to the second end of the cylinder 110 by magnetic attraction, clamping, gluing, or welding.

[0063] In the embodiment of the present application, the second retaining ring 130 surrounds the second end of the cylinder 110 and extends radially along the cylinder 110. The second retaining ring 130 is annular, and its inner edge is connected to the outer edge of the second end of the cylinder 110. The second retaining ring 130 extends radially along the cylinder 110, that is, the second retaining ring 130 is perpendicular or approximately perpendicular to the central axis of the cylinder 110. In the embodiment of the present application, the second retaining ring 130 is made of rubber, and the second retaining ring 130 and the cylinder 110 are integrally formed, for example, by integral injection molding. In other embodiments, the second retaining ring 130 can be a separate part, connected to the second end of the cylinder 110 by magnetic attraction, clamping, gluing, or welding.

[0064] In an embodiment of the present application, there are multiple cleaning parts 140 (for example, three, four or more) and they are spaced apart on the barrel 110. The cleaning parts 140 extend from the first end of the barrel 110 to the second end of the barrel 110. The first end of the cleaning part 140 is fitted with the first retaining ring 120, and the second end of the cleaning part 140 is fitted with the second retaining ring 130. It should be noted that the fitting mentioned here can refer to the two being combined together, or it can refer to the two being closely abutted together (for example, slightly interferingly abutted together). In an embodiment of the present application, the cleaning part 140 is a blade, and the material of the blade is rubber. The blade is integrally formed with the barrel 110, the first retaining ring 120 and the second retaining ring 130, for example, integrally injection molded. The rubber blade can effectively reduce hair entanglement thereon. In some other embodiments, the blade 140 can be a separate part, connected to the barrel 110, the first retaining ring 120 and the second retaining ring 130 by means such as clipping or gluing. In some other embodiments, the cleaning portion 140 may be a combination of blades and bristles, or a component in other structural forms that can clean the surface to be cleaned.

[0065] In some embodiments, the first retaining ring 120 may also be provided with a first mounting groove corresponding to the barrel 110 and / or a second mounting groove corresponding to the cleaning unit 140. When assembling the first retaining ring 120 and the barrel 110, the barrel 110 is inserted into the first mounting groove and the cleaning unit 140 is inserted into the second mounting groove. The same applies to the second retaining ring 130 and will not be further described here.

[0066] In the embodiment of the present application, the first retaining ring 120 covers the first end of the cleaning portion 140 that is in contact with it, and the second retaining ring 130 covers the second end of the cleaning portion 140 that is in contact with it. That is, the cleaning portion 140 has a root portion connected to the barrel 110 and a contact portion arranged opposite to the root portion. The first end and the second end of the contact portion (that is, the two ends of the contact portion in the axial direction of the barrel 110) are respectively in contact with the first retaining ring 120 and the second retaining ring 130. In the radial direction of the barrel 110, the height of the outer contour of the first retaining ring 120 is greater than or equal to the height of the first end of the contact portion, and the height of the outer contour of the second retaining ring 130 is greater than or equal to the height of the second end of the contact portion. It should be noted that the height mentioned here refers to the distance from the highest point in the radial direction of the barrel 110 to the central axis of the barrel 110. Thus, the cleaning portion 140 is fitted with the first retaining ring 120 and the second retaining ring 130 at the sharp corners of the first end and the second end thereof, respectively. The first retaining ring 120 and the second retaining ring 130 eliminate the sharp corners of the cleaning portion 140, thereby effectively preventing hair from getting caught on the sharp corners, that is, effectively preventing hair from getting entangled at both ends of the roller brush 100.

[0067] In the embodiment of the present application, in the radial direction of the barrel 110, the height of the first end of the cleaning portion 140 and the height of the second end of the cleaning portion 140 are both less than the height of the middle portion of the cleaning portion 140. That is, from the first end to the second end of the cleaning portion 140, the height of the cleaning portion 140 (the height in the radial direction of the barrel 110) first gradually increases and then gradually decreases. The envelope of the cleaning portion 140 during rotation is not a conventional cylinder, but rather a columnar shape with a thick center and thin ends. Consequently, when the roller brush 100 rotates, the middle portion of the cleaning portion 140 can contact and deform with the ground. As the roller brush 100 moves toward the ends, the interference fit between the cleaning portion 140 and the ground gradually decreases, or even ceases to contact the ground. When the roller brush 100 is cleaning hair, the middle portion of the cleaning portion 140 can press down on the hair, preventing it from moving toward the ends and causing it to be sucked into the dust box as the roller brush 100 rotates, thereby preventing the hair from becoming entangled with the roller brush shaft.

[0068] Similarly, the height of each part of the cleaning portion 140 mentioned above refers to the distance from the highest point of each part to the central axis of the cylinder 110 in the radial direction of the cylinder 110 when the cleaning portion 140 is connected to the cylinder 110 .

[0069] In the embodiment of the present application, the cleaning portion 140 is V-shaped. That is, when the circumferential surface of the cylinder 110 is unfolded into a plane, the projection of the cleaning portion 140 thereon is V-shaped. Along the circumference of the cylinder 110, the direction from the end of the cleaning portion 140 toward the middle portion of the cleaning portion 140 is consistent with the direction of forward rotation of the roller brush 100, and the direction of forward rotation of the roller brush 100 is consistent with the direction of rotation of the driving wheel when driving the cleaning device forward. Therefore, when the V-shaped cleaning portion 140 is used to clean garbage, the garbage can be gathered from both sides to the center, achieving a better cleaning effect. In some other embodiments, the shape of the cleaning portion 140 may be spiral or rectangular. When the shape of the cleaning portion 140 is spiral, after the circumferential surface of the cylinder 110 is unfolded into a plane, the projection of the cleaning portion 140 thereon is a curve or an oblique line (inclined relative to the axial direction of the cylinder 110); when the shape of the cleaning portion 140 is rectangular, after the circumferential surface of the cylinder 110 is unfolded into a plane, the projection of the cleaning portion 140 thereon is a straight line parallel to the axial direction of the cleaning portion 140.

[0070] In other embodiments, the first end of the roller brush 100 (i.e., the end where the first retaining ring 120 is located) can be connected to the main body of the cleaning device via a roller brush shaft, and the second end of the roller brush 100 can be a free end. In this case, the second end of the barrel 100 can be provided with the second retaining ring 120, or it can be omitted. In other words, the roller brush 100 can include only the barrel 110, the first retaining ring 120, and the blades 140, but not the second retaining ring 120. In other words, the roller brush 100 can include only the barrel 110, the first retaining ring 120, and the blades 140, that is, the retaining ring is only provided at one end of the barrel 100. When the second end of the roller brush 100 is a free end and the second retaining ring 120 is not provided, hair can be separated from the roller brush 100 at the free end and sucked into the dust box.

[0071] See attached Figure 3-11 The present application also provides a self-propelled cleaning device, which can be a sweeping robot, a sweeping and mopping robot, etc. The self-propelled cleaning device includes a device body (not shown), a driving wheel assembly (not shown), a housing 200, the aforementioned roller brush 100, a roller brush shaft 300, and a roller brush driving assembly 400.

[0072] The device body is the main structure of the cleaning device, and other components or structures in the cleaning device are directly or indirectly connected to the device body.

[0073] The drive wheel assembly is used to drive the device body to move on the surface to be cleaned. In an embodiment of the present application, the drive wheel assembly includes a drive motor and a travel wheel. It should be noted that the "front" ("front side") in this application refers to the part facing the forward direction of the cleaning device (the side facing the forward direction of the cleaning device); the "rear" ("rear side") refers to the part away from the forward direction of the cleaning device (the side away from the forward direction of the cleaning device). There are two travel wheels, which are rotatably connected to the device body and located in the middle of the side of the device body facing the surface to be cleaned. The drive motor is arranged inside the device body and is connected to the travel wheel for driving the travel wheel to rotate, thereby driving the device body to move on the surface to be cleaned. In some embodiments, the drive motor can also be built into the travel wheel and arranged coaxially with the travel wheel. In addition, in some embodiments, the drive wheel assembly can include a drive motor and a track wheel, which is rotatably connected to the device body and is located on the side of the device body facing the surface to be cleaned. The drive motor is connected to the track wheel for driving the track wheel to rotate, thereby driving the device body to move on the surface to be cleaned.

[0074] The housing 200 is connected to the device body, for example, it is detachably connected to the device body by screws, buckles, etc. The roller brush shaft 300 is rotatably connected to the housing 200, and the barrel 110 of the roller brush 100 is sleeved on the roller brush shaft 300, and the roller brush 100 rotates synchronously with the roller brush shaft 300. The roller brush drive assembly 400 is transmission-connected to the roller brush shaft 300, and is used to drive the roller brush shaft 300 to rotate, thereby driving the roller brush 100 to rotate relative to the housing 200. Therefore, when the drive assembly drives the device body to move across the surface to be cleaned, the roller brush shaft 300 can be driven to rotate by the roller brush drive assembly 400 to drive the roller brush 100 to rotate synchronously, so that the cleaning portion 140 of the roller brush 100 contacts the surface to be cleaned, thereby achieving cleaning of the surface to be cleaned.

[0075] In an embodiment of the present application, a accommodating cavity for accommodating the roller brush 100 is provided on the shell 200. The roller brush 100 is located in the accommodating cavity and is partially located outside the shell 200. The portion of the roller brush 100 located outside the shell 200 is used to contact the surface to be cleaned so as to clean the surface to be cleaned while rotating.

[0076] The housing 200 includes a roller brush cover 210 and a roller brush compartment 220. The roller brush cover 210 is detachably connected to the roller brush compartment 220, for example, by screws or snaps. The roller brush cover 210 and the roller brush compartment 220 form the aforementioned accommodating cavity, which accommodates the roller brush 100. The side of the roller brush cover 210 facing the surface to be cleaned has a hollow portion 214 that communicates with the accommodating cavity. The roller brush 100, located in the accommodating cavity, can partially extend outside the housing 200 through this hollow portion 214 to contact the surface to be cleaned.

[0077] The housing 200 is provided with a first flexible contact member 211 and a second flexible contact member 212. The first flexible contact member 211 and the second flexible contact member 212 are located in the accommodating cavity. The first flexible contact member 211 contacts the outer contour of the first retaining ring 120, and the second flexible contact member 212 contacts the outer contour of the second retaining ring 130. Therefore, when the roller brush 100 is cleaning hair on the surface to be cleaned and the hair moves to the position of the first retaining ring 120 or the second retaining ring 130, the first flexible contact member 211 and the second flexible contact member 212 can prevent the hair from moving to the outside of the first retaining ring 120 and the second retaining ring 130, thereby preventing the hair from being entangled on the roller brush shaft 300 or entering the roller brush drive assembly 400. In the embodiment of the present application, the first flexible contact member 211 and the second flexible contact member 212 are both plush pads. In other embodiments, the first flexible contact member 211 and the second flexible contact member 212 can be brushes or other suitable flexible members that do not significantly affect the rotation of the roller brush 100. In the embodiment of the present application, the first flexible contact member 211 and the second flexible contact member 212 are both provided on the roller brush cover 210 and located at the rear side of the roller brush cover 210. It should be noted that the rear side here refers to the side away from the direction of travel of the cleaning device.

[0078] It is understandable that the first flexible contact member 211 and the second flexible contact member 212 may also be provided at other locations, such as on the front side of the roller brush cover 210, or on the roller brush compartment 220. Furthermore, there may be multiple first flexible contact members 211 and second flexible contact members 212, with the multiple first flexible contact members 211 contacting different portions of the first retaining ring 120, and the multiple second flexible contact members 212 contacting different portions of the second retaining ring 130. In some embodiments, the first flexible contact member 211 and the second flexible contact member 212 may also be omitted.

[0079] See attached Figure 5-9 In the embodiment of the present application, the first end of the roller brush shaft 300 is transmission-connected to the roller brush drive assembly 400, and the second end of the roller brush shaft 300 is rotationally matched with the shell. Specifically, the roller brush shaft 300 includes a first connecting section 310, a second connecting section 320 and a third connecting section 330. The first connecting section 310 is inserted into the axial hole 150 of the barrel 110, the second connecting section 320 is detachably connected to the first end of the first connecting section 310 and transmission-connected to the roller brush drive assembly 400, and the third connecting section 330 is detachably connected to the second end of the first connecting section 310 and rotatably connected to the shell 200. The multi-section design of the roller brush shaft 300 facilitates disassembly and assembly with the barrel 110 and the shell 200. Of course, in other embodiments, it can also be designed with 2 sections or more than 4 sections.

[0080] The shaft hole 150 of the barrel 110 may include a first slot extending axially along the barrel 110, and the outer side surface of the first connecting section 310 may include a protrusion extending axially thereof. The first protrusion mates with the first slot. Thus, when the first connecting section 310 is inserted into the shaft hole 150 of the barrel 110, the first protrusion engages with the first slot. When the first connecting section 310 rotates, the first protrusion and the first slot drive the roller brush 100 to rotate synchronously. The shaft hole 150 of the barrel 110 may also include a second protrusion extending circumferentially along the shaft hole 150. The outer side surface of the first connecting section 310 may include a second slot extending circumferentially therefrom. The second protrusion mates with the second slot. Thus, when the first connecting section 310 is inserted into a predetermined position in the shaft hole 150 of the barrel 110, the second protrusion engages with the second slot, limiting the axial movement of the roller brush 100 relative to the first connecting section, thereby ensuring the stability of the rotation of the roller brush 100. The second connecting section 320 is provided with a polygonal groove on the side facing the first connecting section 310 (that is, a groove with a polygonal cross-section in the axial direction of the roller brush shaft 300, and the polygon can be a square, a regular hexagon or other polygon). Correspondingly, the first connecting section 310 is provided with a plurality of polygonal protrusions matching the polygonal groove on the side facing the second connecting section 320 (that is, the first end of the first connecting section 310) (that is, a protrusion with a polygonal cross-section in the axial direction of the roller brush shaft 300). The polygonal protrusions are inserted into the polygonal grooves, so that when the second connecting section 320 rotates, the first connecting section 310 can be driven to rotate synchronously through the polygonal protrusions and the polygonal grooves. The third connecting segment 330 has a polygonal protrusion on the side facing the first connecting segment 310. Correspondingly, the first connecting segment 310 has a polygonal groove on the side facing the third connecting segment 330 (i.e., the second end of the first connecting segment 310) that matches the polygonal protrusion. The polygonal protrusion engages with the polygonal groove, so that when the first connecting segment 310 rotates, the polygonal protrusion and the polygonal groove drive the third connecting segment 330 to rotate synchronously. In this embodiment of the present application, the roller brush shaft 300 is connected by plugging, which allows for easy assembly and disassembly, convenient maintenance, and convenient replacement of the roller brush 100 when it wears out.

[0081] In the embodiment of the present application, a first connecting rod 340 is disposed between the first connecting section 310 and the second connecting section 320. The first connecting rod 340 is coaxial with the first connecting section 310 and the second connecting section 320, and the two ends of the first connecting rod 340 are respectively plugged into the first connecting section 310 and the second connecting section 320. The first connecting rod 340 is used to ensure the coaxiality of the first connecting section 310 and the second connecting section 320. A second connecting rod 350 is disposed between the first connecting section 310 and the third connecting section 330. The second connecting rod 350 is coaxial with the first connecting section 310 and the third connecting section 330, and the two ends of the second connecting rod 350 are respectively plugged into the first connecting section 310 and the third connecting section 330. The second connecting rod 350 is used to ensure the coaxiality of the first connecting section 310 and the third connecting section 330.

[0082] See attached Figure 6 In this embodiment of the present application, the roller brush drive assembly 400 includes a motor 410 and a transmission structure. The motor 410 is connected to the roller brush shaft 300 through the transmission structure. The transmission structure includes a belt transmission structure 420 and a transmission shaft 430. The motor 410 is connected to the transmission shaft 430 through the belt transmission structure 420, and is used to drive the transmission shaft 430 to rotate. The transmission shaft 430 is rotatably disposed in the housing 200 and is plugged into the roller brush shaft 300. Specifically, in the embodiment of the present application, the transmission shaft 430 is rotatably connected to the housing 200 via a first bearing 440. A polygonal groove is provided on the side of the transmission shaft 430 facing the roller brush shaft 300. A polygonal protrusion matching the polygonal groove is provided on the side of the roller brush shaft 300 facing the transmission shaft 430 (i.e., the side of the second connecting section 320 facing the transmission shaft 430). The polygonal protrusion is inserted into the polygonal groove. Thus, when the transmission shaft 430 rotates, the polygonal protrusion and the polygonal groove can drive the roller brush shaft 300 to rotate synchronously, thereby driving the roller brush 100 to rotate synchronously. In some other embodiments, the belt drive structure 420 can also be replaced with a gear drive structure and a worm gear drive structure, which can be configured as needed by those skilled in the art. In the embodiment of the present application, the roller brush drive assembly 400 is disposed in the housing 200. In some other embodiments, the roller brush drive assembly 400 can be disposed in the roller brush shaft 300. Specifically, at least one end of the roller brush shaft 300 is rotatably connected to the housing, and the roller brush drive assembly 400 may include a motor and a gear transmission assembly arranged in the roller brush shaft 300, and the motor drives the roller brush shaft 300 to rotate relative to the housing 200 through the gear transmission assembly.

[0083] See attached Figure 7In this embodiment of the present application, a third connecting rod 360 is inserted into the side of the third connecting section 330 away from the second connecting section 320. The third connecting rod 360 is configured to rotate synchronously with the third connecting section 330. Specifically, a polygonal groove can be provided on the side of the third connecting section 330 away from the second connecting section 320. The first end of the third connecting rod 360 has a shape that matches the shape of the polygonal groove and is inserted into the polygonal groove. The second end of the third connecting rod 360 is rotatably connected to the housing 200 via the second bearing 230.

[0084] See attached Figure 6 In the embodiment of the present application, the transmission structure is also magnetically coordinated with the roller brush shaft 300. Specifically, a first magnetic member 431 is provided on the side of the transmission shaft 430 facing the roller brush shaft 300, and a second magnetic member 322 is provided on the side of the roller brush shaft 300 facing the transmission shaft 430 (that is, the side of the second connecting section 320 facing the transmission shaft 430). The first magnetic member 431 and the second magnetic member 322 are attracted to each other so that the transmission shaft 430 and the roller brush shaft 300 fit tightly together, that is, the polygonal protrusions and the polygonal holes on the roller brush shaft 300 and the transmission shaft 430 always fit tightly together to eliminate the gap and reduce the noise generated when the transmission shaft 430 and the roller brush shaft 300 rotate. The first magnetic member 431 and the second magnetic member 322 are two parts that can be magnetically attracted, one of which can be a magnet and the other can be a metal sheet that can be attracted by a magnet (such as an iron sheet). The first magnetic member 431 and the second magnetic member 322 can also both be magnets. In some embodiments, the roller brush shaft 300 may also be interference-fitted with the transmission structure. In this case, the first magnetic member 431 and the second magnetic member 322 may be omitted.

[0085] See attached Figure 6 and attached Figure 8-10In the embodiment of the present application, the first end of the roller brush shaft 300 (that is, on the second connecting member) has a plug-in groove 321 extending in the circumferential direction, and the shell 200 has a plug-in portion 213 that matches the plug-in groove 321. The plug-in portion 213 is a vertical wall on the shell 200. The plug-in portion 213 is inserted into the plug-in groove 321 and is clearance-matched with the plug-in groove 321. Therefore, the plug-in portion 213 will not affect the rotation of the roller brush shaft 300. The connection between the plug-in portion 213 and the plug-in groove 321 (that is, the staggered arrangement of the two) can effectively extend the path for hair to enter, making it difficult for hair to enter the roller brush drive assembly 400 through the gap between the roller brush shaft 300 and the shell 200 and cause damage to the roller brush drive assembly 400. In the embodiment of the present application, the plug-in portion 213 is provided on the roller brush cover 210. The plug-in portion 213 has a plurality of teeth 2131 spaced apart along the circumference of the roller brush shaft 300. The teeth 2131 are used to catch hair as it passes through them, preventing it from moving further into the housing 200 and entering the roller brush drive assembly 400. In other embodiments, the first end of the roller brush shaft 300 may have a plug-in portion 213 extending circumferentially, and the housing 200 (e.g., the roller brush cover 210) may have a plug-in slot 321 that matches the plug-in portion 213. The number of plug-in slots 321 and the plug-in portion 213 may be one or more, and those skilled in the art may flexibly configure them based on the size requirements of the cleaning device. In other embodiments, the walls of the plug-in slot 321 may also be provided with teeth 2131 to catch hair and prevent it from moving further into the housing 200.

[0086] See attached Figure 7 、 9 , see attached Figure 6 and attached Figure 8-10 In the embodiment of the present application, the second end of the roller brush shaft 300 (i.e., on the third connecting member) has a first step portion 331 extending in the circumferential direction, and the housing 200 has a second step portion 221 that matches the first step portion 331. The first step portion 331 and the second step portion 221 are clearance-matched, which effectively extends the path for hair to enter the housing 200, making it difficult for hair to enter the housing 200 through the gap between the roller brush shaft 300 and the housing 200 and become entangled on the third connecting rod 360 or the second bearing 230, thereby preventing hair from causing the roller brush shaft 300 to become stuck. In other embodiments, the second end of the roller brush shaft 300 and the corresponding housing 200 may also be provided with the aforementioned insertion groove 321 and insertion portion 213, and the insertion of the insertion groove 321 and the insertion portion 213 is used to restrict hair from entering.

[0087] In some other embodiments, the roller brush shaft 300 (i.e., the first connecting section 310, the second connecting section 320, and the third connecting section 330) can be integrally formed, and the roller brush 100 can be formed onto the roller brush shaft 300 by injection molding after the roller brush shaft 300 is formed. In some other embodiments, the roller brush shaft 300 can be integrally formed with the roller brush 100, and the roller brush shaft 300 can include a first rotating shaft and a second rotating shaft extending from both ends of the cylinder 110 to both sides. The first rotating shaft and the second rotating shaft are integrally formed with the roller brush 100, and the first rotating shaft is connected to the transmission shaft 430 by plugging, and the first rotating shaft is provided with the above-mentioned plug-in slot 321 and the second magnetic member 322. The second rotating shaft is rotatably connected to the housing 200 through the second bearing 230, and the second rotating shaft is provided with the above-mentioned first step portion 331.

[0088] In other embodiments, the roller brush shaft 300 may be configured such that its first end is rotatably connected to the housing and in transmission connection with the roller brush drive assembly 400, while its second end is free (not connected to the housing 200) and has a certain gap between the housing and the roller brush 100. In this case, the roller brush 100 may have a first retaining ring 120 and a second retaining ring 130 at each end, or the first retaining ring 120 may be provided only at the first end of the barrel 110 (the end of the barrel 110 adjacent to the first end of the roller brush shaft 300), without the second retaining ring 120. In the case where the second end of the roller brush shaft 300 is a free end, the aforementioned insertion groove 321 may be provided on one of the first end of the roller brush shaft 300 and the housing 200, and the aforementioned insertion portion 213 may be provided on the other end. The insertion portion 213 is inserted into the insertion groove 321, and the groove wall of the insertion groove 321 and / or the insertion portion 213 may have a plurality of teeth 2131 spaced apart along the circumference of the roller brush shaft 300. Likewise, the second flexible contact member 212 may also be omitted, which will not be further described here.

[0089] See attached Figure 11 In this embodiment of the present application, a scraper bar 215 is further provided on the side of the housing 200 facing the surface to be cleaned. The scraper bar 215 is configured to contact the surface to be cleaned to block debris. The self-propelled cleaning device also includes a trash chute 222, a fan (not shown), and a dust box (not shown). One end of the trash chute 222 is connected to the storage chamber, and the other end is connected to the dust inlet of the dust box. The roller brush drive assembly 400 is configured to drive the roller brush shaft 300 to rotate the roller brush 100 forward, thereby rolling up trash and moving it toward the scraper bar 215. The fan is configured to generate negative pressure in the dust box to absorb trash into the dust box.

[0090] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely illustrative and are not intended to limit the scope of the present application. Various changes and modifications may be made therein by those skilled in the art without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0091] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0092] Similarly, it should be understood that in order to streamline the present application and aid in understanding one or more of the various inventive aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this approach of the present application should not be interpreted as reflecting the intention that the application claimed for protection requires more features than those explicitly recited in each claim. More precisely, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with fewer features than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, with each claim itself serving as a separate embodiment of the present application.

[0093] Those skilled in the art will understand that, except where mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or apparatus disclosed herein may be combined in any combination. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0094] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

[0095] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A roller brush, characterized in that: include: Cylinder; A retaining ring, which is disposed at at least one end of the cylinder and extends in the radial direction of the cylinder; The blades are multiple and are spaced apart in the circumferential direction on the cylinder, the blades extend from the first end of the cylinder to the second end of the cylinder, the blades are fitted with the retaining ring, wherein the retaining ring covers the end of the blade fitted with the retaining ring.

2. The roller brush according to claim 1, characterized in that: In the radial direction of the cylinder, a height of the first end of the blade and a height of the second end of the blade are both smaller than a height of a middle portion of the blade.

3. The roller brush according to claim 1, characterized in that: The cylinder, the retaining ring and the blades are integrally formed.

4. The roller brush according to claim 1, characterized in that: The shape of the blade is V-shaped, spiral or rectangular; and / or, The blades are made of rubber.

5. The roller brush according to claim 1, characterized in that: The retaining rings are arranged at both ends of the cylinder.

6. A self-moving cleaning device, characterized in that: include: Equipment body; A driving wheel assembly, used for driving the main body of the device to move forward; A housing connected to the device body; The roller brush according to any one of claims 1 to 4; A roller brush shaft, the roller brush shaft is connected to the housing, and the cylinder body is sleeved on the roller brush shaft; The roller brush driving assembly is connected to the roller brush shaft in driving connection, and is used for driving the roller brush shaft to rotate, thereby driving the roller brush to rotate relative to the shell.

7. The self-moving cleaning device according to claim 6, characterized in that: The housing is provided with a flexible contact piece, and the flexible contact piece contacts the outer contour of the retaining ring.

8. The self-moving cleaning device according to claim 7, characterized in that: The housing comprises a roller brush bin and a roller brush cover, wherein the roller brush cover is detachably connected to the roller brush bin, a receiving cavity is formed between the roller brush bin and the roller brush cover, and a hollow portion communicating with the receiving cavity is provided on a side of the roller brush cover facing the surface to be cleaned; The roller brush is accommodated in the accommodating cavity and partially extends out of the accommodating cavity through the hollow portion; The flexible contact piece is arranged on the roller brush cover and is located at the rear side of the roller brush cover.

9. The self-moving cleaning device according to claim 6, characterized in that: The first end of the roller brush shaft is drivingly connected to the roller brush driving assembly, and the second end of the roller brush shaft is rotationally matched with the shell, wherein the retaining ring is arranged at both ends of the cylinder.

10. The self-moving cleaning device according to claim 9, characterized in that: The roller brush shaft includes a first connecting section, a second connecting section and a third connecting section. The first connecting section is inserted into the barrel, the second connecting section is detachably connected to the first end of the first connecting section and is transmission-connected to the roller brush drive assembly, and the third connecting section is detachably connected to the second end of the first connecting section and is rotatably connected to the shell.

11. The self-moving cleaning device according to claim 6, characterized in that: The first end of the roller brush shaft is transmission-connected to the roller brush drive assembly, and the second end of the roller brush shaft is a free end, wherein the retaining ring is disposed at the first end of the cylinder or at both ends of the cylinder, and the first end of the cylinder is adjacent to the first end of the roller brush shaft.

12. The self-moving cleaning device according to claim 6, characterized in that: A plug-in slot is provided on one of the end of the roller brush shaft and the housing, and a plug-in portion is provided on the other, and the plug-in portion is inserted into the plug-in slot, wherein the end of the roller brush shaft at least includes one end drivingly connected to the roller brush drive assembly; A plurality of tooth-shaped portions are arranged at intervals along the circumference of the roller brush shaft on the groove wall of the insertion groove and / or on the insertion portion.

13. The self-moving cleaning device according to claim 12, characterized in that: The housing comprises a roller brush bin and a roller brush cover, wherein the roller brush cover is detachably connected to the roller brush bin, a receiving cavity is formed between the roller brush bin and the roller brush cover, and a hollow portion communicating with the receiving cavity is provided on a side of the roller brush cover facing the surface to be cleaned; The roller brush is accommodated in the accommodating cavity and partially extends out of the accommodating cavity through the hollow portion; The plug-in groove is arranged on one of the end of the roller brush shaft and the roller brush cover, and the plug-in portion is arranged on the other one.

14. The self-moving cleaning device according to claim 6, characterized in that: The roller brush driving assembly includes a motor and a transmission structure; The motor is transmission-connected to the roller brush shaft via the transmission structure, and the transmission structure is magnetically matched with the roller brush shaft.

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